Yokogawa VM1*B Multipoint Analog I/O Card
The Yokogawa VM1*B, also cataloged as the VM1*B Multipoint Analog I/O Card, operates as a dedicated hardware component for multipoint analog signal acquisition and signal output generation within Yokogawa DCS architectures. It processes real-time field telemetry across flexible differential or single-ended channel configurations, delivering dual-function analog input and output control execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | VM1*B |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | Standard card module weight |
| Dimensions | Standard Yokogawa I/O module form factor |
| Operating Temp | -40 to +70 deg C (-40 to +158 deg F) |
| Power Consumption | Standard backplane power bus load |
| Channel Capacity | 8 differential or 16 single-ended analog input channels |
| Output Functionality | Configurable analog output channels |
| Communication | HART protocol supported for diagnostics and configuration |
| Calibration Storage | Retains factory default and user-defined A/D calibration values |
| Redundancy | Dual-redundant configuration supported via adjacent module pair |
4-20 mA HART Loop Protocol Integration
The VM1*B card incorporates HART communication capabilities directly across its analog channels to allow bi-directional digital telemetry transfer alongside standard analog loop signals. Channel-to-channel isolation and internal signal-conditioning filters maintain analog conversion integrity while facilitating background transmission of field device diagnostics, calibration parameters, and secondary process variables. The onboard non-volatile memory stores both factory default and user-defined A/D calibration coefficients to ensure sustained conversion accuracy under thermal fluctuations across the -40 to +70 deg C operating range.
Frequently Asked Questions
Q: How is dual redundancy implemented using the VM1B module?
A: Dual redundancy is established by installing two adjacent VM1B modules linked in a redundant pair configuration, ensuring seamless automatic failover without interrupting signal processing or output generation.
Q: Can the analog input channels on the VM1*B be configured for single-ended signals?
A: Yes, the onboard channel multiplexer can be software-configured to support either 8 differential input channels or 16 single-ended analog input channels depending on field wiring requirements.
Field Installation Guidelines
- Module Placement: Slide the VM1*B card into the assigned node chassis slot. For redundant operational setups, install the secondary module in the immediately adjacent paired slot.
- Field Terminal Wiring: Connect input/output signal leads to the dedicated terminal assembly. Ensure proper wiring distinction between differential 2-wire pairs and single-ended common-ground runs.
- Shielding and Grounding: Terminate overall cable shields to the cabinet ground bar at a single point to prevent ground loop noise from corrupting HART digital modulation.
Yokogawa VM1*B Multipoint Analog I/O Card
Yokogawa VM1*B Multipoint Analog I/O Card
The Yokogawa VM1*B, also cataloged as the VM1*B Multipoint Analog I/O Card, operates as a dedicated hardware component for multipoint analog signal acquisition and signal output generation within Yokogawa DCS architectures. It processes real-time field telemetry across flexible differential or single-ended channel configurations, delivering dual-function analog input and output control execution.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | VM1*B |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | Standard card module weight |
| Dimensions | Standard Yokogawa I/O module form factor |
| Operating Temp | -40 to +70 deg C (-40 to +158 deg F) |
| Power Consumption | Standard backplane power bus load |
| Channel Capacity | 8 differential or 16 single-ended analog input channels |
| Output Functionality | Configurable analog output channels |
| Communication | HART protocol supported for diagnostics and configuration |
| Calibration Storage | Retains factory default and user-defined A/D calibration values |
| Redundancy | Dual-redundant configuration supported via adjacent module pair |
4-20 mA HART Loop Protocol Integration
The VM1*B card incorporates HART communication capabilities directly across its analog channels to allow bi-directional digital telemetry transfer alongside standard analog loop signals. Channel-to-channel isolation and internal signal-conditioning filters maintain analog conversion integrity while facilitating background transmission of field device diagnostics, calibration parameters, and secondary process variables. The onboard non-volatile memory stores both factory default and user-defined A/D calibration coefficients to ensure sustained conversion accuracy under thermal fluctuations across the -40 to +70 deg C operating range.
Frequently Asked Questions
Q: How is dual redundancy implemented using the VM1B module?
A: Dual redundancy is established by installing two adjacent VM1B modules linked in a redundant pair configuration, ensuring seamless automatic failover without interrupting signal processing or output generation.
Q: Can the analog input channels on the VM1*B be configured for single-ended signals?
A: Yes, the onboard channel multiplexer can be software-configured to support either 8 differential input channels or 16 single-ended analog input channels depending on field wiring requirements.
Field Installation Guidelines
- Module Placement: Slide the VM1*B card into the assigned node chassis slot. For redundant operational setups, install the secondary module in the immediately adjacent paired slot.
- Field Terminal Wiring: Connect input/output signal leads to the dedicated terminal assembly. Ensure proper wiring distinction between differential 2-wire pairs and single-ended common-ground runs.
- Shielding and Grounding: Terminate overall cable shields to the cabinet ground bar at a single point to prevent ground loop noise from corrupting HART digital modulation.
